2002 Ford Excursion 7.3L Diesel Supplement 2nd Printing - Page 5
2002 Ford Excursion Manual
Page 5 highlights
Diesel information Fast start glow plug system The glow plug system consists of: • eight glow plugs • the glow plug relay • engine oil temperature (EOT) sensor • barometric pressure (BARO) sensor The glow plug system is electronically controlled by the PCM. The PCM energizes the glow plugs immediately after the ignition is placed in the ON position, then determines how long the glow plugs will be on according to the EOT and BARO sensors. The required time for the glow plugs to be energized decreases as the engine oil temperature and barometric pressure increase. Engine cooling system The cooling system contains an engine oil cooler which is mounted to the side of the cylinder block. The cooler's function is to regulate engine oil temperature. Engine governed speed The engine governor is controlled by the PCM. The PCM controls fuel input to limit maximum engine speed. It will not, however, prevent engine overspeeding resulting from downshifting at high vehicle speed or by descending steep grades at too high a vehicle speed for the selected transmission gear. For maximum vehicle speed in various gears, refer to the "Transmission shift speed" chart in the Driving tips chapter. Do not exceed 3,600 rpm. Maximum engine governed speed is 3,000-4,000 rpm depending on engine load. Excessive rpm can only be achieved by manually downshifting at too high of a vehicle speed. Operating the engine beyond the governed speed can cause severe engine damage. 5